Saajid Badat, a 34-year-old United Kingdom resident, is expected to testify all day Tuesday by video hookup from London. He refuses to testify in the United States because he faces terrorism charges in Boston that could send him to prison for life.

Military installations in New York, New Jersey, Massachusetts and Maryland are welcoming families of 9/11 victims this week to watch pretrial hearings at Guantanamo Bay, Cuba for five men charged in the terrorist attacks.

Retired Deputy Fire Chief Jim Riches, who lost his son on 9/11, is spending the day watching the proceedings via closed circuit at Fort Hamilton in Brooklyn along with about three-dozen other families.

“These are the guys that murdered my son, I want them to get justice,” FDNY Deputy Chief Jim Riches said. “For me, the proper punishment for them would be the death penalty and I hope that’s what they get.”

The location of Mohammed’s trial has been the subject of intense debate. Many wanted him tried in lower Manhattan, others expressed concern about costs and security of holding such a high-profile terror trial here.

The Justice Department probably will never receive congressional approval to put the alleged Sept. 11 conspirators on trial in a civilian court, a key senator on the issue of terrorism trials said Sunday.